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Efforts to scale up fact-checking through technology, such as artificial intelligence (AI), are increasingly being suggested and tested. This study examines whether previously observed effects of reading fact-checks remain constant when readers are aware of AI's involvement in the fact-checking process. We conducted three online experiments ( N = 3,978), exposing participants to fact-checks identified as either human-generated or AI-assisted, simulating cases where AI fully generates the fact-check or automatically retrieves human fact-checks. Our findings indicate that the persuasive effect of fact-checking, specifically in increasing truth discernment, persists even among participants without a positive prior attitude toward AI. Additionally, in some cases, awareness of AI's role reduced perceived political bias in fact-checks among Republicans. Finally, neither AI-generated nor human fact-checks significantly affected participants' feelings toward or their perceptions of the competence of the targeted politicians.

AbstractThe effectiveness of and its boundary conditions regarding fact–checking news exposure have significant normative and practical implications. While many of the prior studies have focused on the attitudinal consequences of fact–checking news delivered by neutral third parties such as fact–check organizations, relatively less is known as to the effect of fact–checking news delivered by partisan media. Based on the frameworks of motivated reasoning and the hostile‐media effect, we investigate the possibility of decoupling between attitudinal persuasion and perceptual backfire by fact–checking news by partisan media—that is, exposure to fact–checking news increases bias perception of such news yet nevertheless attitudinally persuades audiences. Based on a series of original experiments conducted in South Korea and in the United States, we find consistent support for our prediction, in that exposure to fact–checking news produces the corrective effects, yet at the same time perceived bias of the fact–checking news systematically varies as a function of the ideological slant of partisan media.